Influence the Dopant Concentration on the Photocatalytic Activity: Dy~(3+), Eu~(3+) doped TiO_2

摘要

Titanium dioxide (TiO_2) nanoparticles were synthesis by means of hydro thermal process from metatitanic acid. The impacts reaction temperature, stirring process and aging time on the morphology, the transfer of nanoparticles particles were characterized. The morphology of the nanoparticles was described in detail with scanning electron microscopy. In the dynamic of hydro thermal method, stirring can cut down the reaction time of change from particles to nanoparticles. As can be seen from the XRD patterns, the diffraction peaks get broadened as the Eu~(3+) focus is increased, proposing an orderly abatement in the grain size. The Crystallite size was calculated for pure, Dy~(3+) and Eu~(3+) doped TiO_2 from diffraction plane by Sherrer's formula and it was found that 13 nm to 18 nm. From SEM images the majorities of TiO_2 particles are oblate spheroid or spheroid and look looser, and some macropores could be seen on a few particles.